In a look ahead at a week of Cambridge and Somerville events, there’s a free pi day pie potluck, comedy against cancer, Mobius performance art called “Slay,” Ukrainian folk-rock, a St. Patrick’s fun ...

billboard hot 100™ the week’s most popular current songs across all genres, ranked by streaming activity from digital music sources tracked by luminate, radio airplay audience impressions as ...

The biggest stories of the day delivered to your inbox.